#region (c) 2014 THN Solutions LLC. - All rights reserved
/*
Simplified BSD License (BSD)
THN HTTP Stack Library
Copyright (c) 2014, THN Solutions LLC. ( www.ThnSolutions.com )
Author: Nguyễn, M. Hải                 ( www.Minh-Hai.com     )
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this 
      list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright notice, 
      this list of conditions and the following disclaimer in the documentation 
      and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
POSSIBILITY OF SUCH DAMAGE.
*/
#endregion

#region Record of Change
//             							CHANGE HISTORY
// -------------------------------------------------------------------------------------
// |   DATE    | DEVELOPER  | DESCRIPTION                                              |
// -------------------------------------------------------------------------------------
// | 04-Nov-11 | HaiNM      | First creation.                                          |
// -------------------------------------------------------------------------------------
//
#endregion

#region Record of Audit
//             							REVIEW HISTORY
// -------------------------------------------------------------------------------------
// |   DATE    | REVIEWER   | NOTES                                                    |
// -------------------------------------------------------------------------------------
// -------------------------------------------------------------------------------------
//
#endregion

#region Using directives
using System;

using Thn;
using Thn.Collections;
#endregion

namespace Thn.Net.Http
{
    /// <summary>
    /// Helper class for converting a HTTP response's status code to text.
    /// </summary>
#if DEBUG || TESTING
    public
#else
    public
#endif
 class HttpResponseStatusCodeAsText
    {
        #region Fields
        IntDictionary<string> mTexts = new IntDictionary<string>();
        #endregion

        #region Get Text
        /// <summary>
        /// Retrieve status code as text.
        /// </summary>
        public static string GetText(HttpResponseStatus status)
        {
            return Instance.mTexts[(int)status];
        }

        /// <summary>
        /// Retrieve status code as text.
        /// </summary>
        public static string GetText(int statusCode)
        {
            return Instance.mTexts[statusCode];
        }
        #endregion

        #region Instance
        /// <summary>
        /// Gets an instance of <see cref="type"/>
        /// </summary>
        static HttpResponseStatusCodeAsText Instance
        {
            get
            {
                /// An instance of Singleton wont be created until the very first 
                /// call to the sealed class. This a CLR optimization that ensure that
                /// we have properly lazy-loading singleton. 
                return StatusCodeAsTextCreator.CreatorInstance;
            }
        }

        /// <summary>
        /// Sealed class to avoid any heritage from this helper class
        /// </summary>
        private sealed class StatusCodeAsTextCreator
        {
            // Retrieve a single instance of a Singleton
            private static readonly HttpResponseStatusCodeAsText mInstance = new HttpResponseStatusCodeAsText();

            /// <summary>
            /// Return an instance of the class <see cref="HttpResponseStatusCodeAsText"/>
            /// </summary>
            public static HttpResponseStatusCodeAsText CreatorInstance
            {
                get { return mInstance; }
            }
        }
        #endregion

        #region Private constructor
        /// <summary>
        /// Private constructor to avoid other instantiation
        /// This must be present otherwise the compiler provide 
        /// a default public constructor
        /// </summary>
        private HttpResponseStatusCodeAsText()
        {
            Populate();
        }
        #endregion

        #region Populate
        void Populate()
        {
            //foreach (string item in Enum.GetNames(typeof(HttpResponseStatus)))
            foreach (string item in EnumHelper.GetNames(typeof(HttpResponseStatus)))
            {
                string txt = item.SeparateAndPadWords();
                HttpResponseStatus status = item.Parse<HttpResponseStatus>();
                int code = (int)status;
                mTexts[code] = txt;
            }

            //replace abnormal cases
            mTexts[(int)HttpResponseStatus.OK] = "OK";
            mTexts[(int)HttpResponseStatus.NonAutoritativeInformation] = "Non-Authoritative Information";
            mTexts[(int)HttpResponseStatus.RequestUriTooLong] = "Request URI Too Long";
            mTexts[(int)HttpResponseStatus.Unused_306] = "Unused";
        }
        #endregion
    }
}
